Cold Cranking Test

The battery must be fully-charged and load- tested before proceeding. Refer to Battery for more information.

Volts-Amps Tester Connections - Typical:

1. Connect a suitable volt-ampere tester to the battery terminals. Refer to the operating instructions provided with the tester being used.
2. Fully engage the parking brake.
3. If the vehicle is equipped with an automatic transmission, place the gearshift selector lever in the Park position. If the vehicle is equipped with a manual transmission, place the gearshift selector lever in the Neutral position and fully depress the clutch pedal.
4. Verity that all lamps and accessories are turned off.

WARNING: MODELS EQUIPPED WITH THE DIESEL ENGINE OPTION ALSO HAVE AN AUTOMATIC SHUTDOWN (ASD) RELAY LOCATED IN THE POWER DISTRIBUTION CENTER (PDC). HOWEVER, REMOVAL OF THE ASD RELAY MAY NOT PREVENT THE DIESEL ENGINE FROM STARTING. BE CERTAIN TO UNPLUG THE FUEL SHUTDOWN SOLENOID WIRE HARNESS CONNECTOR. FAILURE TO DO SO MAY RESULT IN PERSONAL INJURY.

Fuel Shutdown Solenoid Connector - Diesel Engine:

5. To prevent the gasoline engine from starting, unplug the Automatic ShutDown (ASD) relay The ASD relay is located in the Power Distribution Center (PDC). Refer to the PDC label for ASD relay identification and location. To prevent the diesel engine from starting, unplug the fuel shutdown solenoid wire harness connector.
6. Rotate and hold the ignition switch in the Start position. Note the cranking voltage and current (amperage) draw.
a. If the voltage reads below 9.6 volts, remove the starter for bench testing. If the starter bench test is not OK, replace the faulty starter.
b. If the voltage reads above 9.6 volts and the current (amperage) draw reads below specifications, see Feed Circuit Test in the Diagnosis and Testing.
c. If the voltage reads 12.5 volts or greater and the starter does not turn, see Control Circuit Test in the Diagnosis and Testing.
d. If the voltage reads 12.5 volts or greater and the starter turns very slowly, see Feed Circuit Test in the Diagnosis and Testing.

NOTE: A cold engine will increase the starter current (amperage) draw reading, and reduce the battery voltage reading.